Class: Lisp::REPL

Inherits:
Object
  • Object
show all
Defined in:
lib/lisp/repl.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ REPL

Returns a new instance of REPL.



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# File 'lib/lisp/repl.rb', line 8

def initialize
  @io = Coolline.new do |config|
    config.transform_proc = proc do
      CodeRay.scan(config.line, :clojure).term
    end
  end

  reset_input!
end

Instance Attribute Details

#input ⇒ Object (readonly)

Returns the value of attribute input.



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# File 'lib/lisp/repl.rb', line 6

def input
  @input
end

#io ⇒ Object (readonly)

Returns the value of attribute io.



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# File 'lib/lisp/repl.rb', line 6

def io
  @io
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/lisp/repl.rb', line 18

def run
  trap("SIGINT") { throw :exit }

  puts "ctrl-c to exit"

  catch(:exit) do
    loop do
      begin
        @input += io.readline prompt

        if open_count == close_count
          puts Lisp.eval input

          reset_input!
        end
      rescue Exception => e
        puts e.message

        reset_input!
      end
    end
  end
end